共搜索到3585条信息，每页显示10条信息，共359页。用时：0小时0分0秒406毫秒
Effect of Lamellar Orientation on Crack Paths in PST Crystals of γ-TiAl Based AlloysYonghao Lu; Lijie Qiao; Yanbin ining; chang Chu(Material Science and Engineering School, University of Science and Technology’ Beijing, Beijing 100083, China)摘 要:Therehasbeengreatprogressinunderstandingtherelationshipbetweenmicrostructllreandmechanicalpropeftiesofy......
(RSM). It is observed that feed rate has greater effect on the outputs rather than depth of cut. Key words: grinding; ceramic; partially stabilized zirconia; crack Cite this article as: Javad KHODAII... compressed, the transition may lead to expansion, compressive stress and crack closure [13, 14]. Grinding is the most suitable process to obtain a dimensional and geometrical accuracy. The cost......
敏感性高于其在上限温度为350~400℃区间内的温度敏感性.关键词:ZAlSi7Cu4；热疲劳；萌生；扩展；裂纹Thermal fatigue crack growth of ZAlSi7Cu4 under different technological conditionsZHANG Zhi-jian1, SI Nai-chao1, SUN Shao-chun1, LIU Guang-lei1..., on a self-restrict thermal fatigue experimental machine. The effect of thermal fatigue property caused by different technologies for heating processing and the effect of crack growth caused by different......
are obtained by the acoustic emission, which can be used to monitor the crack initiation and propagation. The ultimate failure mode and crack coalescence behavior are evaluated for brittle sandstone specimens containing combined flaws. Nine different crack types are identified on the basis of their geometry and crack coalescence mechanism (tensile crack, hole collapse, far-field crack and surface spalling......
轧制加工低合金板钢表面边部裂纹机制研究徐震1,华蔚1,江来珠1(1.上海市宝钢股份有限公司)摘 要:通过"模铸+初轧"工艺轧制低合金钢锭时,钢板易在表面距边部100 mm左右易出现直线型裂纹,裂纹或深或浅,有规律,导致报废量大大增加,影响了正常生产.该类缺陷曾被认为是轧制缺陷,从宏观形貌及微观组织等多方面研究缺陷形成机制,判定源于钢锭表面内在和外在微裂纹缺陷,初轧轧制时轧件在受到拉应力最大的地方产生开裂,从而为产品质量改进提供了理论依据,通过采取有效的技术措施,大大减少了该类缺陷发生的几率. 关键......
titanium alloy plate was produced by β-processing, following with duplex anneal in (α+β) phase field and β anneal, respectively. The fatigue crack propagation rate(da/dN) test and the fracture... ; microstructure ; crack propagation rate; fracture toughness
) 文章编号:1672-7207(2021)07-2402-14 Research on pavement crack detection technology based on convolution neural network ZHANG Weiguang1, ZHONG Jingtao1, YU Jianxin2, MA Tao1, MAO Shuo1, SHI Yilan1 (1... the efficiency of image recognition. The recognition accuracy of the two types of models was compared and analyzed with the help of confusion matrix. Three kinds of processing methods of extracting crack image......基于机器学习和图像处理的路面裂缝检测技术研究
AI导读
来源： 《中南大学学报(自然科学版)2021年第7期》——于建新 张伟光 钟靖涛 马涛 毛硕 石艺兰
at the same average stress; the fatigue limit will be longer when the average stresses are higher at the same annealed status; the fatigue crack mainly initiates at inclusion, surface defect or inner defect on sub-surface; the crack propagation rate will be larger when the load stress is higher in the crack propagation region. Key words: TC18 titanium alloy; fatigue behavior; fractograph; fatigue crack......
Crack Initiation Mechanism of Z3CN20.09M Duplex Stainless Steel during Corrosion Fatigue in Water and Air at 290 °CH.C.Wu1,B.Yang1,2,Y.Z.Shi1,Q.Gao1,Y.Q.Wang31. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing3. School of Materials Science and Engineering, Anhui University of Technology摘 要:The crack......
of the cracks inside the castings increased with the strain rate increasing. 关键词:vinyl ester resin; quasi-static; high strain rate; strain rate response and crack development; [全文内容正在添加中] ......
